1 © 2004, Cisco Systems, Inc. All rights reserved. Module 2 Single-Area OSPF.

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1 1 © 2004, Cisco Systems, Inc. All rights reserved. Module 2 Single-Area OSPF

2 222 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Purpose of This PowerPoint This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.1. It was created to give instructors a PowerPoint to take and modify as their own. This PowerPoint is: NOT a study guide for the module final assessment. NOT a study guide for the CCNA certification exam. Please report any mistakes you find in this PowerPoint by using the Academy Connection Help link.

3 333 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id To Locate Instructional Resource Materials on Academy Connection: Go to the Community FTP Center to locate materials created by the instructor community Go to the Tools section Go to the Alpha Preview section Go to the Community link under Resources See the resources available on the Class home page for classes you are offering Search http://www.cisco.comhttp://www.cisco.com Contact your parent academy!

4 444 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Objectives

5 555 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Overview of Link-State and Distance Vector Routing

6 666 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Link-State Routing Features

7 777 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id How Routing Information Is Maintained

8 888 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Link-State Routing Protocol Algorithms

9 999 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Advantages and Disadvantages of Link- State Routing

10 10 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Comparing Distance Vector and Link-State Routing

11 11 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id OSPF Overview OSPF is becoming the preferred IGP protocol when compared with RIPv1 and RIPv2 because it is scalable.

12 12 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id OSPF Terminology

13 13 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id More OSPF Terminology

14 14 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Comparing OSPF Link State with Distance Vector Routing Protocols

15 15 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Shortest Path Algorithm The best path is the lowest-cost path.

16 16 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id OSPF Network Types

17 17 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id OSPF Hello Protocol

18 18 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Steps in the Operation of OSPF Discover neighbors

19 19 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Steps in the Operation of OSPF Elect DR and BDR on Multi Access Network

20 20 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Steps in the Operation of OSPF Selecting the Best Route

21 21 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Basic OSPF Configuration

22 22 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Basic OSPF Configuration

23 23 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Configuring OSPF Loopback Address and Router Priority

24 24 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Setting OSPF Priority The priorities can be set to any value from 0 to 255. A value of 0 prevents that router from being elected. A router with the highest OSPF priority will win the election for DR.

25 25 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Modifying OSPF Cost Metric

26 26 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Configuring OSPF Authentication

27 27 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Configuring OSPF Timers

28 28 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id OSPF - Propagating a Default Route

29 29 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Common OSPF Configuration Issues

30 30 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Verifying OSPF Configuration show ip protocol show ip route show ip ospf interface shop ip ospf show ip ospf neighbor detail show ip ospf database

31 31 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id The debug and clear Commands for OSPF Verification

32 32 © 2004, Cisco Systems, Inc. All rights reserved. www.pnj.ac.id Summary